PPP surveyed 934 Montana voters, including 403 Republican primary voters, from April
26th to 29th. The margin of error for the overall survey is +/-3.2%, and +/-4.88% for the
primary portion. This poll was not paid for or authorized by any campaign or political
organization. PPP surveys are conducted through automated telephone interviews. PPP is
a Democratic polling company, but polling expert Nate Silver of the New York Times
found that its surveys in 2010 actually exhibited a slight bias toward Republican
candidates.